I'm concerned about the bad reports of using shuffle to do a vnode upgrade (and I did a "smoke test" trying shuffle a test cluster, and had out of disk space issues).
I then started to plan out the "dual DC" upgrade path, but I wonder if this option is easier: Starting point: N node cluster, no vnodes. 1.) Upgrade all N nodes to vnodes in place 2.) Boot N new nodes and let them bootstrap 3.) Decommission the N old nodes And/Or 1.) Upgrade all N nodes to vnodes in place Start loop 2.) Boot a new node and let it bootstrap 3.) Decommission an old node End loop The only problem I can think of is unlike dual DC, there is no easy rollback strategy. Though, at this point, vnodes have been in the wild for quite some time, and I kind of want/need to move over to vnodes, so it's "vnodes or bust" so to speak :-) Am I missing a terrible "gotcha" (other than the rollback issue)? I did a smoke test of the 2nd scenario (one node in/out at a time) and didn't see any issues.... will
